Trivial extensions of monomial algebras are symmetric fractional Brauer configuration algebras of type S

Abstract

By giving some equivalent definitions of fractional Brauer configuration algebras of type S in some special cases, we construct a fractional Brauer configuration from any monomial algebra. We show that this algebra is isomorphic to the trivial extension of the given monomial algebra. Moreover, we show that there exists a one-to-one correspondence between the isomorphism classes of monomial algebras and the equivalence classes of pairs consisting of a symmetric fractional Brauer configuration algebra of type S with trivial degree function and a given admissible cut over it.